Process of preparing alkaline electrolytes for storage batteries.



.D; P. PERRY. PROCESS OF PREPARING ALKALINE ELEGTROLYTES FOR STORAGE BATTERIES.

APPLIOATION FILED DEC. 26, 1903. RENEWED MAR. 18,1908.

Patented Aug. 17, 1909.

MN l l h h H H JlTED SATES PATENT DAVID P. PERRY, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNI) ASSIOYMlfiN'lS. OF TWO" THIRDS TO WILLIAM MORRISON, OF CHICAGO, ILLINOIS, AND ONE-THIRD TO oi. A. LUBE- BARD, OF DES MOINES, IOWA.

PROCESS or PREPARING ALKALINE Eriucrsoris'rss sossroiiee-ir.

irof 931,082.

Specification of Letters Patent.

Patented Aug. 17,

Application filed. December 26, 1903, Serial No. 186,763. Renewed 352x011 18, 3.908. Serial l lo. il-21,2313.

To all whom it may concern: Be it known that 1, DAVID P. PERRY, e citizen of the limited States of America, and resident of Chicago, Cook county, lllinois, 5. have invented a. certain new and useful linprovement in Processes of Pro raring Allislioe Electrolytes for Storage etteries, of which the following is' s specifiostioii.

'lvly inventiourelotes to the preparation of 10 alkaline electrolytes for storsge batteries, as

for example zinceto of potesh, and other similsr solutions.

Generally stated, the object of my invention is the provision of an improved process ormetl od whereby electrolytes of this clierecter may be furnished to storage batteries in sucli condition as to be free, or precticelly free from any impurities which might tend battery in, which it is employed.

A-speciel object is to provide so improved process or method whereby sn'electrolyte which is, as stated, free, or practically free, from impurities may be produced in esimple,

practice and highly economical manner.

The nature and advantages of my inveution will, however, hereinafter more fully ll lo the eccom anying drawings Figure 3 is e longitudinal section through it storage battery in. which the alkaline solution produced by my improved process my be employed. Fig. 2 is a. diagrammatic view illustrating one method of obtaining pure, or

36 precticelly pure, alkaline or potssli solution. it will be readily understood that tire electrolyte obtained by my improved process can be employed in my suitable, known or approved form of slimline buttery. rm-

to interfere with the proper working of the 40 example, sud us showeeiu Fig. l of the draw" ings, the battery may consist of at suitable cell A, e positive clement ll, and an inner or negative element C, the outer element being of copper wire gauze, the inner element consisting of a perforated copper tube filled with any suitable known or approved active material 0. The positive pole of the battery D can be suitably connected with the negiiv tive element through the medium of the: centrally arranged metallic conductor (Z. [is illustrated, the cylindric positive and negative elements ii and C are maintained in their proper relative positions l vmeans of rubber rings i l, and rubber coils or end or recticelly purified, slimline sol pieces F. In this lorni oi bettery, the hr BEE negative element is preferably covered with one or more layers. of porous G, such es poper and linen, and so on. perforated copper tube, H; he motoll constitutes the negative pole of the bet; and is connected with the posbve ole through the medium of the rue to.a rivet i in a battery this 'cliors electrolyte may consist of 9. solution. Us etc of potesli of the ordinary the action end We kings of on alias] L, age battery of this nature being well liROl-Jii. in order, however, that time working of 1.: battery of this character may be materi improved, and in order that its services may be substentiully increased, l. employ improved process for milling the clecticcl t the object being to in 'e ti. a provision o electrolyte, such since-to of potfi example, which Jv:lll be free, or free, irom impurities. I21 czu'rying out my improved iroccse 0i method of Droducing slimline siiioote, for use {is an electrolyte for may suitably con structed storage battery, I F ,lece will buttery, say of the construction shown l, s suilicient quantity of the odlins' line sc uti et is to sun-$21222 sslii I i upon the positive clement, i their po r i solutioi and wash out the bette thorough washing being sec sci-y the icterior of the battery per cctiy elem: s; free from all sediment or impurities. this, 1 their place within the buttery a pure,

mum.

for eirsmplo, a suitable solution and, of course, without the zinc. 1 tery can now be discharged in he usual unorner, end the zinc on {be posiiiv (flrilllz 4 enter the solution, lormiuu sinus: ror" In this way, a pure electrolyte is izrsm zinc, in a przwticully pure coiuliiiou caused to enter the solution u'itlio i.

' by electrolysis, the in'ilpurities being precipi- 'lhe' tery can be repeatedly charged and dis,

charged and used eon'timrously, in the ordinary manner, without amusing an sediment or impurities to accumulate at the bottom of the battery. And this, of course, is'due to .the fact that. the electrolyte, bel'ore being put into practical use, has been relieved of all impurities.

'lhe alkaline or potash solution can be purified in any suitable known or approved manner. For example, this alkaline'ol' potash solution, wt ch is of course, as stated, devoid of zinc, and which is placed within the battery alter the zinc ol' the ordinary vlincate ot' potash solution has been deposited on the positive element, wan be rendered pure by subjecting it to electrolysis.

As shown in Fig. 2, the alkaline. or potash solution K may be placed within a suitable receptacle J, containing two suitable elecl..l'()(l( S-l1"""l.l, and subjected to current, and the solution thus electrolyzed and purilied tated to the bottom 0 the receptzu-lc. pure liquid or potash solution can then be poured oil, and when thus obtained is adapted for use in the manner explained that is to say, it is ready to be placed in the battery containing the zinc-plated positive clement. Thus it will be seen that. I provide an improved HOCOSS for producing a pure, or practically pure, alkaline elect rolyte l'or storage batteries; that the said process is of av very simple. practical and eeonomitml character, alt-it is of an extremely satisfactory nature from a manul'acturine standpoint; that it is a process which involves as a step or steps the ordinary charging and dis cl'ia-rging ol' the battery; that as a result the electrolyte thus cheaply and ell'ectively prov metallic duced is capable of rendering any alkaline istorage battery in which it is employed much more satisfactory in use.

What .l claim as my invention is:

1. 'lhe process of preparing an alkaline zincate electrolyte for storage batteries, which consists in 'lirst placing an alkaline zinc-ate within a suitable storage battery, then charging the battery and thereby depositing the zine of the solution upon the positive element of the battery, then pouring oil the solution and washing; out the battery, and replacing the solution thus poured oil with a puritied alkaline solution, and then discharging the battery.

2. The process of preparing: an alkaline zincatc electrolyte. l'or storagr'e. batteries, which consists in lirst placing an alkaline solution in a suitable battery, charging: the battery in the ordinalmanner and thereby depositing the metal held in solution upon the positive element of the.

battery, then pouring, oli the solution and washing; out the laittery, and 'linally replacing; the solution thus poured oil with a puri lied alkaline solution and then discharging; the battery.

3. 'lhe process ol' pre mi'ing' an alkaline Zincate clectrol \fto l'or storage batteries, which consists in placing an alkaline zincate electrolyte in a storage battery, charging the battery, pouring; oil the solution and washing; out the battery, and then replacing: the solution thus poured oil with an electrolyt'ieall purilicd alkaline. solution and then dischar; ing the battery.

Signed by me at (hit-ago, (ook county, lllinois, this 25th day of November, limit.

imvn) r. ricnnv.

Witnesses: 

